200021122221 has 8 divisors (see below), whose sum is σ = 267206721984. Its totient is φ = 133091468640.

The previous prime is 200021122219. The next prime is 200021122241. The reversal of 200021122221 is 122221120002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200021122221 - 2¹ = 200021122219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200021122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63984721 + ... + 63987846.

It is an arithmetic number, because the mean of its divisors is an integer number (33400840248).

Almost surely, 2^200021122221 is an apocalyptic number.

It is an amenable number.

200021122221 is a deficient number, since it is larger than the sum of its proper divisors (67185599763).

200021122221 is a wasteful number, since it uses less digits than its factorization.

200021122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127973091.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200021122221 its reverse (122221120002), we get a palindrome (322242242223).

The spelling of 200021122221 in words is "two hundred billion, twenty-one million, one hundred twenty-two thousand, two hundred twenty-one".